Means for winding yarn



July 30, 1940. QLKEN ET AL 2,2Q9Q471 MEANS FOR WINDING YARN Filed June 17, 1957 FIQI.

Fl 4 INVENTORS BY 6 6 A? Ber 24f" q WTTOR EY Patented July 30, 1940 UNITED STATES MEANS FOR WINDING YARN David Olken, Boston,

and I George Bernat,

Brookline, Mass., assignors to Emile Bernat & Sons 00., Jamaica Plain, Mass. I

Application June 17, 1937, Serial No. 148,762

2 Claims.

The present invention relates to an apparatus for winding yarns or threads but more particularly for the winding of a yarn of silk or wool or other like material.

In the winding of such materials it is frequently desirable to wind the yarn in a ball which is usually done by employing as a frame about which the yarn is wound a cylinder of cardboard, paper, wood or the like.

The common type of winding called the ball winding is that in which while the cylinder is being rotated it is also being oscillated and in addition to this provided with an advance so that the threads do not fall one over the other but lie progressively one side of the other in such a way that the ball is usually built up uniformly on all sides.

In this type of winding the tension on the yarn or thread must be such that it is positively positioned on the frame or over the preceding layer so that it will not slip out of place and spoil the shape of the ball or interfere with the winding. This tension is naturally retained throughout the winding process and produces therefore a ball in which the yarn or thread is given a permanent tension which does not readily release itself particularly in the threads beneath the top since these threads are held quite firmly in place by the outer or covering threads. On account of this permanent tension which the yarn receives, there results a permanent set or stretch in the yarn which has a tendency to remove the yielding qualities of the yarn and take away one of the properties which is chiefly very desirable in yarns or threads as a Whole. This yielding quality, particularly in yarn, produces a softness in the finished product or garment and a resiliency which tends to preserve the shape of the garment for which the yarn is used.

The present invention has its aim and purpose in so winding the yarn that when the ball is finished the yarn is flexible and not tensioned at any portion of it. In this Way no permanent set is placed on the yarn and therefore all of its initial qualities are preserved.

The invention will be more fully understood in connection with the description given below as associated with the drawing, in which:

Figure 1 shows the ball of yarn partially wound on the spindle with a portion broken away to show the spindle mechanism.

Figure 2 shows the ball removed from the spindle and in its final condition.

Figure 3 shows an end view looking at the spindle from the right of Figure 1, and,

Figure 4 shows a modified form of the invention showing half the ball and spindle in the same relative position as Figure 2.

In Figure 1, the shaft I is rotated and oscillated to wind the thread or yarn upon the telescopic cylinder 2. As will be noted in Figures 1 and 2 the yarn lies in directions other than perpendicular to the axis of the cylinder 2 so that the cylinder in its telescopic position, tensions the yarn to a greater degree than when collapsed in the manner described below. This telescopic cylinder has an internal cylinder 3 and an external cylinder .4 supported on the spindle frame. The spindle frame is composed of two discs 5 and 6 which are provided with holes in which the wires 7, 8, 9 and ID are pivoted. These wires are bent at a right angle just at the inside of the faces of the discs 5 and 6 and extend in a straight line after these bends as indicated by the portion of the wire numbered I2. All of the wires project through the plate 6 after which they are bent at an angle as indicated at I3 and extend normally into the plate I 4 in the grooves I5, I6, I I and I8. The disc I4 is rotatable on the spindle shaft I and held in position by the collars I9 and 20 at either side of the disc I4. These collars may be pinned to the shaft I by means of the set screws 2| and 22 respectively. Along the wires I, 8, 9 and I0 at the long portions I2 there is attached an L-shaped member 23 with an outwardly projecting flange 24 at one end and at the other end a flat top surface 25. This serves to support and position the telescopic cylinder 2 in the desired telescopic position asindicated in Figure 1. Before winding the spool, the telescopic tube is placed over the wire frame as indicated in Figure 1 and the collar or disc I4 is turned with respect to the spindle causing the wires I, 8, 9 and ID to move along the grooves I5, I6, I! and I8 and spread outwardly until the portions I2 of the wires form a firm contact with the telescopic tube 2 as indicated in Figure l. The spindle is then set in rotation by the winding mechanism not shown, in a direction to maintain the frame in its expanded position and the yarn is wound in the ball as indicated by 26 in Figure 1. When the winding has been completed, the disc I4 is turned back freeing the spindle frame from the cylinder so that the ball of yarn is completed with the cylinder as a core.

The inner and outer tubes as indicated by 30 and 3| in Figure 2 are then telescoped to the extent that is desired either pressing them completely together as in Figure 4 or almost together as indicated in Figure 2. This relieves all of the winding tension on the yarn itself so that it is yielding and flexible although still sufficiently solid to preserve its form and shape on the core.

The invention as set forth above may be practiced with all types of wools or silk yarns or even cotton and may be applied in modified forms to other types of spindles and collapsible cores, although the present embodiment shows a preferred form of the invention particularly as applied to a wool yarn ball.

Having now described our invention, we claim:

1. A spindle for winding yarn on a telescopic core formed of two telescopic tubes comprising means forming an expandible frame, said expandible frame having wires parallel to the spindle axis and an L-shaped element positioned on each said wires, said L-shaped elements having one stem mounted parallelly to said wires on the outer sides of the frame, the top end of the said stern serving as a stop for the inner of the two telescopic core tubes, and the other stem of said L serving as the stop for said outer of said telescopic tubes, the tubes having such diameters that when the frames expand said wires and said L-shaped elements will bear respectively against said inner and outer tubes of said core.

2. A spindle for winding yarn on a telescopic core formed of two telescopic tubes, comprising an expandible spindle frame having wires positioned parallel to the spindle axis, means mounted on said spindle axis projecting beyond the wires of said frame parallel to said spindle axis on one portion only of said wires, said means also being provided with projecting flanges to position the ends of said telescopic tube elements, whereby when said spindle is expanded, a portion of said wires will bear against the wall of one of said tubes and said means will bear against the Wall of the other of said tube.

DAVID OLKEN. GEORGE BERNAT. 

